专利内容由知识产权出版社提供
专利名称：ENDOSCOPE OBJECTIVE OPTICAL SYSTEM发明人：KATAKURA, Masahiro申请号：EP14838726.9申请日：20140819公开号：EP3037858A4公开日：20170315
摘要：This endoscope objective optical system is capable of acquiring images of highresolution and wide angle of observation field, maintaining low invasiveness andappropriately correcting various aberrations. This optical system has at least a firstcemented lens which has a positive lens and a negative lens, in which the cemented lenssatisfies the following conditional expressions. 15.0 < vA ˆ’ ndA < 15.75 ˆ’ 0.2 > rdyA 1 /ih > ˆ’ 20 ½A is an Abbe number of the negative lens, ndA is a refractive index of thenegative lens at the d-line, rdyA1 is a curvature radius of a joining surface of the negativelens, and ih is an image height.
申请人：Olympus Corporation
地址：2951 Ishikawa-machi, Hachioji-shi, Tokyo 192-8507 JP
国籍：JP
代理机构：Schicker, Silvia
更多信息请下载全文后查看
